1220113321011 has 96 divisors (see below), whose sum is σ = 1973742301440. Its totient is φ = 721405440000.

The previous prime is 1220113320989. The next prime is 1220113321027. The reversal of 1220113321011 is 1101233110221.

1220113321011 is a `hidden beast` number, since 1 + 220 + 11 + 332 + 101 + 1 = 666.

It is not a de Polignac number, because 1220113321011 - 2⁶ = 1220113320947 is a prime.

It is a super-2 number, since 2×1220113321011² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220113321051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 175325350 + ... + 175332308.

It is an arithmetic number, because the mean of its divisors is an integer number (20559815640).

Almost surely, 2^{1220113321011} is an apocalyptic number.

1220113321011 is a deficient number, since it is larger than the sum of its proper divisors (753628980429).

1220113321011 is a wasteful number, since it uses less digits than its factorization.

1220113321011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517 (or 7514 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1220113321011 its reverse (1101233110221), we get a palindrome (2321346431232).

The spelling of 1220113321011 in words is "one trillion, two hundred twenty billion, one hundred thirteen million, three hundred twenty-one thousand, eleven".